Free MCQs with Answers | Military Brat Defence Academy

Q: The angles of a triangle are in the ratio 2:3:4. Find the largest angle.

Correct Answer: D. 80 degrees. The nine ratio parts total 180 degrees, so one part is 20 degrees. The largest angle is 4 × 20 = 80 degrees; 90 degrees is not in the ratio.

Q: The area of a circle of radius 7 cm, using pi = 22/7, is:

Correct Answer: C. 154 sq cm. Area equals pi r squared = 22/7 × 7 × 7 = 154 sq cm. Forty-four is the circumference, not the area.

Q: The perimeter of a rectangle is 54 cm and its length is 16 cm. Find its breadth.

Correct Answer: B. 11 cm. Since 2(l + b) = 54, l + b = 27 and b = 27 - 16 = 11 cm. Thirteen cm would give a perimeter of 58 cm.

Q: If 4x + 7 = 31, find x.

Correct Answer: A. 6. Subtracting 7 gives 4x = 24, so x = 6. Seven would make the left side 35.

Q: A boat moves at 12 km/h in still water and the stream speed is 3 km/h. Its downstream speed is:

Correct Answer: D. 15 km/h. Downstream speed equals boat speed plus stream speed, 12 + 3 = 15 km/h. Nine km/h is the upstream speed.

Q: A train 150 metres long crosses a pole in 10 seconds. Find its speed.

Correct Answer: C. 54 km/h. Speed is 150 ÷ 10 = 15 m/s. Multiplying by 3.6 gives 54 km/h. Sixty km/h corresponds to about 16.67 m/s.

Q: A car travels 180 km in 3 hours. Its average speed is:

Correct Answer: B. 60 km/h. Average speed equals distance divided by time, 180 ÷ 3 = 60 km/h. Ninety km/h would cover 270 km in three hours.

Q: A can complete a task in 12 days. What fraction of the task does A complete in one day?

Correct Answer: A. 1/12. If the whole task takes 12 days at a constant rate, the one-day work is 1/12. The fraction 1/6 would imply completion in six days.

Q: Find the simple interest on Rs 2,500 at 8 percent per annum for 3 years.

Correct Answer: D. Rs 600. Simple interest equals PRT ÷ 100 = 2500 × 8 × 3 ÷ 100 = Rs 600. Rs 500 would correspond to a shorter period or lower rate.

Q: An article bought for Rs 800 is sold for Rs 920. What is the profit percentage?

Correct Answer: C. 15 percent. Profit is Rs 120, and 120 ÷ 800 × 100 = 15 percent. Twenty percent would require a profit of Rs 160.

QID #13298 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

The angles of a triangle are in the ratio 2:3:4. Find the largest angle.

Correct Answer: D. 80 degrees
The nine ratio parts total 180 degrees, so one part is 20 degrees. The largest angle is 4 × 20 = 80 degrees; 90 degrees is not in the ratio.

Question: The angles of a triangle are in the ratio 2:3:4. Find the largest angle.

A. 60 degrees

B. 70 degrees

C. 90 degrees

D. 80 degrees

Correct Answer: D. 80 degreesExplanation: The nine ratio parts total 180 degrees, so one part is 20 degrees. The largest angle is 4 × 20 = 80 degrees; 90 degrees is not in the ratio.

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QID #13297 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

The area of a circle of radius 7 cm, using pi = 22/7, is:

Correct Answer: C. 154 sq cm
Area equals pi r squared = 22/7 × 7 × 7 = 154 sq cm. Forty-four is the circumference, not the area.

Question: The area of a circle of radius 7 cm, using pi = 22/7, is:

A. 44 sq cm

B. 77 sq cm

C. 154 sq cm

D. 308 sq cm

Correct Answer: C. 154 sq cmExplanation: Area equals pi r squared = 22/7 × 7 × 7 = 154 sq cm. Forty-four is the circumference, not the area.

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QID #13296 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

The perimeter of a rectangle is 54 cm and its length is 16 cm. Find its breadth.

Correct Answer: B. 11 cm
Since 2(l + b) = 54, l + b = 27 and b = 27 - 16 = 11 cm. Thirteen cm would give a perimeter of 58 cm.

Question: The perimeter of a rectangle is 54 cm and its length is 16 cm. Find its breadth.

A. 9 cm

B. 11 cm

C. 13 cm

D. 19 cm

Correct Answer: B. 11 cmExplanation: Since 2(l + b) = 54, l + b = 27 and b = 27 - 16 = 11 cm. Thirteen cm would give a perimeter of 58 cm.

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QID #13295 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

If 4x + 7 = 31, find x.

Correct Answer: A. 6
Subtracting 7 gives 4x = 24, so x = 6. Seven would make the left side 35.

Question: If 4x + 7 = 31, find x.

A. 6

B. 7

C. 8

D. 9

Correct Answer: A. 6Explanation: Subtracting 7 gives 4x = 24, so x = 6. Seven would make the left side 35.

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QID #13294 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

A boat moves at 12 km/h in still water and the stream speed is 3 km/h. Its downstream speed is:

Correct Answer: D. 15 km/h
Downstream speed equals boat speed plus stream speed, 12 + 3 = 15 km/h. Nine km/h is the upstream speed.

Question: A boat moves at 12 km/h in still water and the stream speed is 3 km/h. Its downstream speed is:

A. 9 km/h

B. 12 km/h

C. 18 km/h

D. 15 km/h

Correct Answer: D. 15 km/hExplanation: Downstream speed equals boat speed plus stream speed, 12 + 3 = 15 km/h. Nine km/h is the upstream speed.

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QID #13293 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

A train 150 metres long crosses a pole in 10 seconds. Find its speed.

Correct Answer: C. 54 km/h
Speed is 150 ÷ 10 = 15 m/s. Multiplying by 3.6 gives 54 km/h. Sixty km/h corresponds to about 16.67 m/s.

Question: A train 150 metres long crosses a pole in 10 seconds. Find its speed.

A. 36 km/h

B. 45 km/h

C. 54 km/h

D. 60 km/h

Correct Answer: C. 54 km/hExplanation: Speed is 150 ÷ 10 = 15 m/s. Multiplying by 3.6 gives 54 km/h. Sixty km/h corresponds to about 16.67 m/s.

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QID #13292 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

A car travels 180 km in 3 hours. Its average speed is:

Correct Answer: B. 60 km/h
Average speed equals distance divided by time, 180 ÷ 3 = 60 km/h. Ninety km/h would cover 270 km in three hours.

Question: A car travels 180 km in 3 hours. Its average speed is:

A. 50 km/h

B. 60 km/h

C. 70 km/h

D. 90 km/h

Correct Answer: B. 60 km/hExplanation: Average speed equals distance divided by time, 180 ÷ 3 = 60 km/h. Ninety km/h would cover 270 km in three hours.

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QID #13291 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

A can complete a task in 12 days. What fraction of the task does A complete in one day?

Correct Answer: A. 1/12
If the whole task takes 12 days at a constant rate, the one-day work is 1/12. The fraction 1/6 would imply completion in six days.

Question: A can complete a task in 12 days. What fraction of the task does A complete in one day?

A. 1/12

B. 1/6

C. 1/10

D. 12

Correct Answer: A. 1/12Explanation: If the whole task takes 12 days at a constant rate, the one-day work is 1/12. The fraction 1/6 would imply completion in six days.

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QID #13290 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

Find the simple interest on Rs 2,500 at 8 percent per annum for 3 years.

Correct Answer: D. Rs 600
Simple interest equals PRT ÷ 100 = 2500 × 8 × 3 ÷ 100 = Rs 600. Rs 500 would correspond to a shorter period or lower rate.

Question: Find the simple interest on Rs 2,500 at 8 percent per annum for 3 years.

A. Rs 500

B. Rs 550

C. Rs 650

D. Rs 600

Correct Answer: D. Rs 600Explanation: Simple interest equals PRT ÷ 100 = 2500 × 8 × 3 ÷ 100 = Rs 600. Rs 500 would correspond to a shorter period or lower rate.

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QID #13289 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

An article bought for Rs 800 is sold for Rs 920. What is the profit percentage?

Correct Answer: C. 15 percent
Profit is Rs 120, and 120 ÷ 800 × 100 = 15 percent. Twenty percent would require a profit of Rs 160.

Question: An article bought for Rs 800 is sold for Rs 920. What is the profit percentage?

A. 12 percent

B. 14 percent

C. 15 percent

D. 20 percent

Correct Answer: C. 15 percentExplanation: Profit is Rs 120, and 120 ÷ 800 × 100 = 15 percent. Twenty percent would require a profit of Rs 160.

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QID #13288 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

The average of 18, 24, 30, 36 and 42 is:

Correct Answer: B. 30
Their sum is 150 and 150 ÷ 5 = 30. Option 32 does not equal the arithmetic mean.

Question: The average of 18, 24, 30, 36 and 42 is:

A. 28

B. 30

C. 32

D. 34

Correct Answer: B. 30Explanation: Their sum is 150 and 150 ÷ 5 = 30. Option 32 does not equal the arithmetic mean.

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QID #13287 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

The ratio of two numbers is 3:5 and their sum is 64. Find the smaller number.

Correct Answer: A. 24
The total ratio is 8 parts, so each part is 64 ÷ 8 = 8. The smaller number is 3 × 8 = 24; 40 is the larger number.

Question: The ratio of two numbers is 3:5 and their sum is 64. Find the smaller number.

A. 24

B. 32

C. 40

D. 48

Correct Answer: A. 24Explanation: The total ratio is 8 parts, so each part is 64 ÷ 8 = 8. The smaller number is 3 × 8 = 24; 40 is the larger number.

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QID #13286 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

A number is increased by 20 percent and becomes 360. What was the original number?

Correct Answer: D. 300
If the original number is x, then 1.20x = 360, giving x = 300. Option 288 results from subtracting 20 percent of 360 incorrectly.

Question: A number is increased by 20 percent and becomes 360. What was the original number?

A. 280

B. 288

C. 320

D. 300

Correct Answer: D. 300Explanation: If the original number is x, then 1.20x = 360, giving x = 300. Option 288 results from subtracting 20 percent of 360 incorrectly.

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QID #13285 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

Find the HCF of 84 and 126.

Correct Answer: C. 42
The common prime factors give 2 × 3 × 7 = 42. The value 21 is common but is not the greatest common factor.

Question: Find the HCF of 84 and 126.

A. 14

B. 21

C. 42

D. 63

Correct Answer: C. 42Explanation: The common prime factors give 2 × 3 × 7 = 42. The value 21 is common but is not the greatest common factor.

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QID #13284 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

Simplify: 48 ÷ 6 × 3 + 4.

Correct Answer: B. 28
Using division and multiplication from left to right, 48 ÷ 6 = 8, 8 × 3 = 24 and 24 + 4 = 28. Option 24 omits the final addition.

Question: Simplify: 48 ÷ 6 × 3 + 4.

A. 24

B. 28

C. 32

D. 36

Correct Answer: B. 28Explanation: Using division and multiplication from left to right, 48 ÷ 6 = 8, 8 × 3 = 24 and 24 + 4 = 28. Option 24 omits the final addition.

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QID #13283 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

The ozone layer is primarily located in which atmospheric layer?

Correct Answer: A. Stratosphere
Most atmospheric ozone is concentrated in the stratosphere. The troposphere is the lowest layer where most weather occurs.

Question: The ozone layer is primarily located in which atmospheric layer?

A. Stratosphere

B. Troposphere

C. Mesosphere

D. Thermosphere

Correct Answer: A. StratosphereExplanation: Most atmospheric ozone is concentrated in the stratosphere. The troposphere is the lowest layer where most weather occurs.

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QID #13282 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

Which naval command of the Indian Navy is headquartered at Visakhapatnam?

Correct Answer: D. Eastern Naval Command
The Eastern Naval Command is headquartered at Visakhapatnam. The Western Naval Command is headquartered at Mumbai.

Question: Which naval command of the Indian Navy is headquartered at Visakhapatnam?

A. Western Naval Command

B. Southern Naval Command

C. Andaman and Nicobar Command

D. Eastern Naval Command

Correct Answer: D. Eastern Naval CommandExplanation: The Eastern Naval Command is headquartered at Visakhapatnam. The Western Naval Command is headquartered at Mumbai.

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QID #13281 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

Which constitutional body conducts elections to Parliament and state legislatures?

Correct Answer: C. Election Commission of India
Article 324 vests election supervision, direction and control in the Election Commission of India. UPSC conducts recruitment examinations.

Question: Which constitutional body conducts elections to Parliament and state legislatures?

A. Finance Commission

B. Union Public Service Commission

C. Election Commission of India

D. NITI Aayog

Correct Answer: C. Election Commission of IndiaExplanation: Article 324 vests election supervision, direction and control in the Election Commission of India. UPSC conducts recruitment examinations.

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QID #13280 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

The Green Revolution in India is most closely associated with:

Correct Answer: B. M. S. Swaminathan
M. S. Swaminathan played a leading role in India's Green Revolution. Verghese Kurien is associated with the White Revolution.

Question: The Green Revolution in India is most closely associated with:

A. Verghese Kurien

B. M. S. Swaminathan

C. Vikram Sarabhai

D. Homi J. Bhabha

Correct Answer: B. M. S. SwaminathanExplanation: M. S. Swaminathan played a leading role in India's Green Revolution. Verghese Kurien is associated with the White Revolution.

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QID #13279 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 1 Medium

Which fundamental particle carries a negative electric charge?

Correct Answer: A. Electron
An electron carries one unit of negative elementary charge. A proton carries positive charge.

Question: Which fundamental particle carries a negative electric charge?

A. Electron

B. Proton

C. Neutron

D. Photon

Correct Answer: A. ElectronExplanation: An electron carries one unit of negative elementary charge. A proton carries positive charge.

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Free MCQs with Answers | Military Brat Defence Academy

The angles of a triangle are in the ratio 2:3:4. Find the largest angle.

The area of a circle of radius 7 cm, using pi = 22/7, is:

The perimeter of a rectangle is 54 cm and its length is 16 cm. Find its breadth.

If 4x + 7 = 31, find x.

A boat moves at 12 km/h in still water and the stream speed is 3 km/h. Its downstream speed is:

A train 150 metres long crosses a pole in 10 seconds. Find its speed.

A car travels 180 km in 3 hours. Its average speed is:

A can complete a task in 12 days. What fraction of the task does A complete in one day?

Find the simple interest on Rs 2,500 at 8 percent per annum for 3 years.

An article bought for Rs 800 is sold for Rs 920. What is the profit percentage?

The average of 18, 24, 30, 36 and 42 is:

The ratio of two numbers is 3:5 and their sum is 64. Find the smaller number.

A number is increased by 20 percent and becomes 360. What was the original number?

Find the HCF of 84 and 126.

Simplify: 48 ÷ 6 × 3 + 4.

The ozone layer is primarily located in which atmospheric layer?

Which naval command of the Indian Navy is headquartered at Visakhapatnam?

Which constitutional body conducts elections to Parliament and state legislatures?

The Green Revolution in India is most closely associated with:

Which fundamental particle carries a negative electric charge?

Free MCQs with Answers and Explanations